Vertical-shaft bearing.



No. 821,699. PATENTED MAY 29, 1906.

E. W. BROOMALL..

VERTICAL SHAFT BEARING.

APPLICATION FILED MAY13. 1905.

WITN E5555 NVEN m R v 0 w g, Mm i uit MAM?" are supported by said UNITED s'rA'r s PATENT OFFICE.

EDGAR W; BROOMALL, OF ROCHESTER, NEW YORK.

VERTICAL-SHAFT BEARING- To an whom it may concern:

Be it known that I, EDGAR W. BROOMALL, a citizen of the United States, and a resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Vertical- Shaft Bearings; of which the following is a specification.

. This invention relates to vertical-shaft bearings, and has for its object to reduce the Referring to the invention in vertical section, and Fig. 2

is a horizontal section on the'line 2 2 of Fig. 1.

i 1 represents the casing in which the parts of the mechanism are supported. '2 is a vertical shaft which has a worm 3, and 4 shows a part of a wheel that is suitably supported in the casing 1 and meshes with the worm 3, so as to drive the shaft. The foot of the shaft 5 fits snugly :Within the collar 6. The lower end of this co lar has a conical recess 7, adapted to receive balls 8, three of which are represented in the The shaft 5 and collar 6 are supported upon the balls-by means of a plug 9, whose upper, end is tapered to the conical oint 10. The point 10 of the plug 9 enters etween the three balls 8, so that said balls lug and bear against its conical surface. T e lug 9 is contained within the central bore 0 a block 11 and is supported by the cap 12, the spring 13 being into 'osed between said lug and cap, so as to a 0rd a yielding seat or said plug. The

bearing-collar 6 is provided at its lower end with an external annular shoulder 6 and is passed up throu h the collar 14 until said shoulder 6 under ies a similar internal shoulder 14 within the upper open end of the collar 14, so that the collar '6 cannot be displaced. The cap 12 is screwed into the lower end of the collar 14, which latter thus co'n tains and supports all of the parts of the bearing referred to. The. collar 14 is locked .Lso

'within the casing 1 in proper relation to the vertical shaft 2 by any suitable means. In the drawingsa cl sk 15 is shown, which enters a groove 16 in th collar 14 and whichreceives a bolt 17, that en 'ers the casing. By removingthe bolt 17 the collar 14 can be removed, and withit all the parts of the bearing described above, including the collar 6.

I Specification of Letters Patent.

Application filed May 13, 1205. Serial No. 260,341.

the drawings, Figure 1 shows- Patented May :29, 1906.

The wheel 4 in driving the spindle ekerts a downward pressure upon the shaft, which is relieved by the spring 13, and the jar that the parts would otherwise be subjected to'on suddenly starting or stopping the machine is taken up by this spring. The vertical shaft 2 will under driving pressure also tend to tilt slightly from its true vertical position, and for' this reason a slight space is left between the collars 6 and 14, so that if the vertical shaft 2 is tilted slightly out ofalinement the two collars mentioned will not bind together. Moreover, the bearing described is particularly adapted to meet such a contingency, for if t e shaft 2 leaves its vertical position the balls 8 immediately adjust themselves between the tapered surface of the recess 7 and the conical end 10 of the plug 9, so that no additional friction is created by deviations in.

the position of the shaft. the conical bearin -surfaces on both sides of the balls 8 give aiearing that must always present the same conical surfaces to the balls whatever Wear they may undergo, for the parts in wearing Wlll preserve their respective shapes. By means of the bolt 17 the height of the ence to the shaft.

What I claim isbearing is adjustable with refer It is also true that 1. The combination with .a'shaft having a recess at its lower end, of a s rin -seated plug in longitudinal alinement with t e shaft and having a tapering u per end, a dplurality of balls between thesai recess an tapered end of the plug, and a support within which said parts are held 2. The combination Witha shaft having a.

recess at its lower end, of a longitudinallybored block, a plu in said bore, balls between said plug and said recess, a spring on which the lower end of the plugis seated, a sleeve in which said parts are mounted and a cap closing the lower end of the sleeve and securing the said parts in place.

3. The combination with a sleeve having rdb an annular internal shoulder around its up per end and a cap closing its lower end, of a I caring-collar assed up through the sleeve and havingits ower end provided with a recess and an external shoulder, a longitudinally-bored block in said sleeve, a plug mounted in the bore of saidblock, balls between said plu and the recess, and a spring in the lower en of the bore of the block, held in placeby said cap.

4. The combination with a sleeve having a cap closing its lower end, of a centrally-bored block held in the sleeve by said cap, a spring in the lower end of the bore of the block, a plug resting on the spring and having a conical upper end projecting above the block, a bearing-collar in the upper end of the'sleeve and havinga tapering recess in its lower side and balls between the conical plug and the said recess,

5. The combination with a sleeve having a contracted. upper end and a cap closing its lower end, of a bearing-collar extending through said contracted upper end and having its lower end enlarged or shouldered to hold it from vertical displacement, a centrally-bored block held in the sleeve by said cap, a plug mounted in the block and balls between theplug and the said bearing-collar.

6. The combination with a casing, a sleeve mounted therein and having a cap closing its lower end, and means for adjusting the sleeve in the casing, of a bearing-collar mounted in the upper end of the sleeve, a' spring-sup ported plug held in the sleeve by said cap find balls between said plug and the said col- 7. The combination with a casing, and a I EDGAR W. BROOMALL.

Witnesses: M. MAOARTHUR, L. THoN.

shaft-bearing cone-g prising upiper and lower members wlthm said 

